My 2008 Signature series with about 1500 miles has been getting a bump or small hard shift between 1-2 sometimes. It normally happens when the car is warmed up and then entering a parking lot going slow when trying to find a parking spot. Then it happens if you return to the car or its been in park for a few minutes and then the first 1-2 shift gets a bump. I already pulled fuse #2 PCM. What could it be? I just been taking it easy on the first shift then its fine.